<template>
	<header class="header">
		<h1>todos</h1>
		<input id="toggle-all" class="toggle-all" type="checkbox" v-model="isAll">
		<label for="toggle-all"></label>
		<input class="new-todo" placeholder="输入任务名称-回车确认" autofocus 
		v-model="content" @keyup.enter="addFn"
		/>
	</header>
</template>

<script>
	export default {
		props:['arr'],
		data(){
			return{
				content:''
			}
		},
		methods:{
			addFn(){
				this.$emit('add',this.content)
				this.content = ''
			}
		},
		computed:{
			isAll:{
				get(){
				return	this.arr.every(item => item.isDone)
				},
				set(val){
					return this.arr.forEach(item => item.isDone = val)
				}
			}
		}
	}
</script>
